Advanced Configuration and Management Guide

Table 12.1: VRRP and VRRPE Parameters (Continued)

Parameter

Description

Default

See page...

 

 

 

 

Track priority

A VRRP or VRRPE priority value assigned to the

VRRP – 2

12-5

 

tracked port(s). If a tracked port’s link goes down, the

VRRPE – 5

12-17

 

VRID port’s VRRP or VRRPE priority changes.

 

 

 

 

• VRRP – The priority changes to the value of the

 

 

 

tracked port’s priority.

 

 

 

• VRRPE – The VRID port’s priority is reduced by

 

 

 

the amount of the tracked port’s priority.

 

 

 

 

 

 

Backup preempt

Prevents a Backup with a higher VRRP priority from

Enabled

12-18

mode

taking control of the VRID from another Backup that

 

 

 

has a lower priority but has already assumed control

 

 

 

of the VRID.

 

 

 

 

 

 

Configuring Basic VRRP Parameters

To implement a simple VRRP configuration using all the default values, enter commands such as the following.

Configuring the Owner

Router1(config)# router vrrp

Router1(config)# inter e 1/6

Router1(config-if-1/6)# ip address 192.53.5.1

Router1(config-if-1/6)# ip vrrp vrid 1

Router1(config-if-1/6-vrid-1)# owner

Router1(config-if-1/6-vrid-1)# ip-address 192.53.5.1

Router1(config-if-1/6-vrid-1)# activate

Configuring a Backup

Router2(config)# router vrrp

Router2(config)# inter e 1/5

Router2(config-if-1/5)# ip address 192.53.5.3

Router2(config-if-1/5)# ip vrrp vrid 1

Router2(config-if-1/5-vrid-1)# backup

Router2(config-if-1/5-vrid-1)# ip-address 192.53.5.1

Router2(config-if-1/5-vrid-1)# activate

Configuration Rules for VRRP

•The interfaces of all routers in a VRID must be in the same IP sub-net.

•The IP address(es) associated with the VRID must already be configured on the router that will be the Owner router.

•An IP address(es) associated with the VRID must be on only one router.

•The Hello interval must be set to the same value on both the Owner and Backup(s) for the VRID.

•The Dead interval must be set to the same value on both the Owner and Backup(s) for the VRID.

•The track priority on a router must be lower than the router’s VRRP priority. Also, the track priority on the Owner must be higher than the track priority on the Backup(s).

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